Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering

Feng, Zhange; Sarnello, Erik; Li, Tao; Cheng, Lei

doi:10.1149/2.0971816jes

Title: Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering

Abstract

Small angle X-ray scattering studies are conducted to gain insight of the microscopic structures on LiPF₆/carbonates battery electrolyte. The result shows that ethylene carbonate (EC), with a cyclic structure, forms nanoclusters of ~1 nm in linear carbonates ethyl methyl carbonate (EMC), diethyl carbonate (DEC), while it fully dissolves in a cyclic carbonate, propylene carbonate (PC). The ion pair of LiPF₆ in carbonates is measured to be ~6 Å in dimension, corresponding to the form of contact ion pair. The new microscopic structure the battery electrolyte reported herein is important for the understanding of non-ideal behavior of LiPF6 carbonate based electrolyte and thus the design of new electrolyte.

Authors:

; Sarnello, Erik; Li, Tao;

Publication Date:: 2019-01-04

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1489715

Alternate Identifier(s):: OSTI ID: 1491079

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Published Article

Journal Name:: Journal of the Electrochemical Society

Additional Journal Information:: Journal Name: Journal of the Electrochemical Society Journal Volume: 166 Journal Issue: 2; Journal ID: ISSN 0013-4651

Publisher:: The Electrochemical Society

Country of Publication:: United States

Language:: English

Subject:: 25 ENERGY STORAGE; Batteries - Lithium; carbonate; electrolyte structure; SAXS

Citation Formats


                    Feng, Zhange, Sarnello, Erik, Li, Tao, and Cheng, Lei. Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering.  United States: N. p., 2019. 
Web.  doi:10.1149/2.0971816jes.

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                    Feng, Zhange, Sarnello, Erik, Li, Tao, & Cheng, Lei. Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering.  United States.  https://doi.org/10.1149/2.0971816jes

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                    Feng, Zhange, Sarnello, Erik, Li, Tao, and Cheng, Lei. Fri .  
"Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering".  United States.  https://doi.org/10.1149/2.0971816jes.

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@article{osti_1489715,

  title        = {Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering},

  author       = {Feng, Zhange and Sarnello, Erik and Li, Tao and Cheng, Lei},

  abstractNote = {Small angle X-ray scattering studies are conducted to gain insight of the microscopic structures on LiPF6/carbonates battery electrolyte. The result shows that ethylene carbonate (EC), with a cyclic structure, forms nanoclusters of ~1 nm in linear carbonates ethyl methyl carbonate (EMC), diethyl carbonate (DEC), while it fully dissolves in a cyclic carbonate, propylene carbonate (PC). The ion pair of LiPF6 in carbonates is measured to be ~6 Å in dimension, corresponding to the form of contact ion pair. The new microscopic structure the battery electrolyte reported herein is important for the understanding of non-ideal behavior of LiPF6 carbonate based electrolyte and thus the design of new electrolyte.},

  doi          = {10.1149/2.0971816jes},

  journal      = {Journal of the Electrochemical Society},

  number       = 2,

  volume       = 166,

  place        = {United States},

  year         = {2019},

  month        = {1}

}

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Cited by: 1 work

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Figures / Tables:

Figure 1: (a) Chemical structure of EC, PC, EMC and DEC. (b) SAXS data of EC/PC (1/9) and PC. (c) SAXS data of EC/EMC (1/9) and EMC. (d) SAXS data of EC/DEC (1/9) and DEC.

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Works referenced in this record:

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Similar Records

Title: Communication—Microscopic View of the Ethylene Carbonate Based Lithium-Ion Battery Electrolyte by X-ray Scattering

Abstract

Citation Formats

Figures / Tables:

Small Angle X-ray Scattering for Nanoparticle Research journal, April 2016

Ionic Size journal, February 1959

Evaluating Transport Properties and Ionic Dissociation of LiPF 6 in Concentrated Electrolyte journal, January 2017

On the correlation between surface chemistry and performance of graphite negative electrodes for Li ion batteries journal, September 1999

Solvate Structures and Computational/Spectroscopic Characterization of LiPF 6 Electrolytes journal, April 2015

Structural and aggregate analyses of (Li salt + glyme) mixtures: the complex nature of solvate ionic liquids journal, January 2015

Irena : tool suite for modeling and analysis of small-angle scattering journal, February 2009

Degradation mechanisms in Li-ion batteries: a state-of-the-art review: Degradation Mechanisms in Li-ion Batteries: A State-of-the-Art Review journal, April 2017

Dielectric Constant, Dipole Moment, and Solubility Parameters of Some Cyclic Acid Esters journal, March 2006

Relationship between Structural Relaxation, Shear Viscosity, and Ionic Conduction of LiPF 6 /Propylene Carbonate Solutions journal, December 2015

A structural study of LiTFSI–tetraglyme mixtures: From diluted solutions to solvated ionic liquids journal, October 2015

Electrolytes and Interphasial Chemistry in Li Ion Devices journal, January 2010

Role of Mixed Solvation and Ion Pairing in the Solution Structure of Lithium Ion Battery Electrolytes journal, June 2015

Dielectric Constants for Quantum Chemistry and Li-Ion Batteries: Solvent Blends of Ethylene Carbonate and Ethyl Methyl Carbonate journal, September 2015

Thermochemical Radii of Complex Ions journal, November 1999

Concentration Effects on the Entropy of Electrochemical Lithium Deposition: Implications for Li + Solvation journal, October 2015

Small Angle X-ray Scattering for Nanoparticle Research
journal, April 2016

Ionic Size
journal, February 1959

Evaluating Transport Properties and Ionic Dissociation of LiPF ₆ in Concentrated Electrolyte
journal, January 2017

On the correlation between surface chemistry and performance of graphite negative electrodes for Li ion batteries
journal, September 1999

Solvate Structures and Computational/Spectroscopic Characterization of LiPF ₆ Electrolytes
journal, April 2015

Structural and aggregate analyses of (Li salt + glyme) mixtures: the complex nature of solvate ionic liquids
journal, January 2015

Irena : tool suite for modeling and analysis of small-angle scattering
journal, February 2009

Degradation mechanisms in Li-ion batteries: a state-of-the-art review: Degradation Mechanisms in Li-ion Batteries: A State-of-the-Art Review
journal, April 2017

Dielectric Constant, Dipole Moment, and Solubility Parameters of Some Cyclic Acid Esters
journal, March 2006

Relationship between Structural Relaxation, Shear Viscosity, and Ionic Conduction of LiPF ₆ /Propylene Carbonate Solutions
journal, December 2015

A structural study of LiTFSI–tetraglyme mixtures: From diluted solutions to solvated ionic liquids
journal, October 2015

Electrolytes and Interphasial Chemistry in Li Ion Devices
journal, January 2010

Role of Mixed Solvation and Ion Pairing in the Solution Structure of Lithium Ion Battery Electrolytes
journal, June 2015

Dielectric Constants for Quantum Chemistry and Li-Ion Batteries: Solvent Blends of Ethylene Carbonate and Ethyl Methyl Carbonate
journal, September 2015

Thermochemical Radii of Complex Ions
journal, November 1999

Concentration Effects on the Entropy of Electrochemical Lithium Deposition: Implications for Li ⁺ Solvation
journal, October 2015